A superhydrophobic surface is coated on the surface of a cloth by MTCS (methyltrichlorosilane) nanoparticles and then, it is modified by SiO2–m–FTCS (1H,1H,2H,2H-Perfluorododecyltrichlorosilane) nanoparticles. This surface is characterized by SEM(scanning electron microscopy), and FT-IR (Fourier transform-infrared microscopy) and also its contact angle is investigated in various conditions and ...

A facile synthesis of highly functionalized 2H-iminopyran derivatives by the multi-component reaction of cyclohexyl isocyanide, dialkyl acetylenedicarboxylates, arylglyoxals and arylamines is described. The zwitterionic intermediate produced by addition of cyclohexyl isocyanide to electron-deficient acetylene diesters was trapped by the electrophilic imine moiety of α-iminoketones, derived from...

The transition metal dichagenides and their metallic 1T structure are attracting contemporary attentions for applications in high-performance devices because their peculiar optical and electrical properties. The single and few layers 1T structure is generally obtained by mechanical or chemical exfoliation. This work presents facile one-step synthesis of 2H-1T MoS2:Cu/reduced graphene oxide nano...

OBJECTIVES Type 2 diabetes and the consumption of saturated fatty acids (FAs) are on the rise among Alaska Inuits. This analysis, based on a cross-sectional study, explores the possible associations of saturated FA content in red blood cells (RBCs) and parameters of glucose metabolism in a sample of Alaska Natives. STUDY DESIGN AND METHODS The sample included 343 women and 282 men aged 35-74....

Fatty acids are long-chain carboxylic acids that readily produce [M - H](-) ions upon negative ion electrospray ionization (ESI) and cationic complexes with alkali, alkaline earth, and transition metals in positive ion ESI. In contrast, only one anionic monomeric fatty acid-metal ion complex has been reported in the literature, namely [M - 2H  +  Fe(II)Cl](-). In this manuscript, we present two...

Nghiên cứu này nhằm đánh giá ảnh hưởng của các phương pháp kích thích khác nhau đến hiệu quả sinh sản ốc bươu đồng. Thí nghiệm được bố trí trong bể có thước (1m × 1m 1 m), mật độ 30 cá thể ốc/m2 (tỷ lệ đực:cái bằng nhau) và mực nước ban đầu là 40 cm. Mỗi thức lặp lại 3 lần với như sau: 1) Tăng 50% nước, kết hợp phơi bóng râm 2 giờ (A50-2h); 2) (A50-3h); 3) 4 (A50-4h); 4) Giảm 75% (D75-2h); 5) (...

Herein, we report the synthesis of 2-(2-fluoro-[1,1′-biphenyl]-4-yl)-N-(4-methyl-2-oxo-2H-chromen-7-yl)propanamide in reaction between 7-amino-4-methyl-2H-chromen-2-one and (±)-flurbiprofen. The newly-obtained bio-functional hybrid compound was fully characterized via 1H, 13C NMR, UV, mass spectral data.

3-Arylsubstituted derivatives of 2H,3H,4H,7Hand 1H,2H,3H,4H-[1,2,4]triazolo[4,5a]pyrimidin-4-ones were synthesized from 2-arylidenehydrazino-6-methyl-4-pyrimidones by treatment with acetic anhydride. The structures of the starting compounds and of the isomeric diN-acetylated reaction products were established by NMR.

From the methanol extract of the aerial parts of Peperomia blanda (Piperaceae), two chromenes were isolated and characterized mainly through application of 2D-NMR spectroscopy. The structures were 2S-(4-methyl-3-pentenyl)-6-formyl-8-hydroxy-2,7-dimethyl-2H-chromene and 2S-(4-methyl-3-pentenyl)-5-hydroxy-6-formyl-2,7-dimethyl-2H-chromene named as blandachromenes I and II, respectively.

The title compound, C(12)H(22)O(11)·2H(2)O {systematic name: 6,6'-oxybis[2-(hy-droxy-meth-yl)-3,4,5,6-tetra-hydro-2H-pyran-3,4,5-triol] dihydrate}, is a disaccharide, which was isolated from Tremella fuciformis. The mol-ecule contains two six-membered rings, both of which adopt a chair conformation. Extensive O-H⋯O hydrogen bonds occur in the crystal structure.